When trying to update administrator records via upload, you may receive an error stating "The only active Constituent360 records matched are administrators. Administrator records cannot be updated."
Due to security reasons, administrator records cannot be modified via upload in Luminate Online. These changes will need to be made manually.
If you're trying to add these users to a standard user group, create regular constituent records (non-admin records) for these individuals. Doing so will allow you to mass-upload these individuals to a group.